Senior iOS Mobile Developer

Donato Technologies, Inc; San Ramon (CA); On-site; USD 180,000 - 235,000; Full time

Job summary

Donato Technologies Inc. is seeking a Senior iOS Mobile Developer to build scalable, consumer-focused native iOS apps.

The ideal candidate will master Swift and Objective-C, UIKit/SwiftUI, and API integration; experience with e-commerce apps and deployment via App Store Connect is highly valued. The role offers challenging projects and opportunities to optimize performance and influence product direction.

Qualifications

• 8+ years of experience in iOS native development.
• Proficient in Swift and Objective-C; strong UIKit/SwiftUI skills.
• Experience with modern iOS architectures (MVVM/MVC/Clex) and RESTful APIs.
• Knowledge of memory management, GCD/async/await, and performance optimization.
• Experience with App Store Connect, TestFlight, and deployment processes.
• Familiarity with CI/CD tools (Fastlane, Jenkins, GitHub Actions, Azure DevOps).
• Experience with Firebase Analytics/Crashlytics and mobile analytics tools.
• Strong testing experience (XCTest/XCUITest) and automated UI tests.
• Experience with offline storage, caching, and data synchronization.
• Experience with security/auth (OAuth/JWT) and secure API integration.

Responsibilities

• Build and maintain scalable native iOS apps for consumer-facing experiences.
• Integrate RESTful APIs, secure authentication, and data persistence.
• Collaborate with product, design, and backend teams to deliver features end-to-end.
• Optimize performance, memory usage, and app startup times.
• Ensure App Store deployment readiness with proper testing and release processes.

Skills

Swift

Objective-C

UIKit

SwiftUI

Core Data

Core Animation

API integration

OAuth/JWT

GCD/async-await

Memory management

Offline storage/data sync

Firebase Analytics/Crashlytics

Unit/UI Tests

App Store Connect/TestFlight

CI/CD (Fastlane/Jenkins/GitHub Actions

Git

Agile/Scrum

Tools

Xcode

App Store Connect

TestFlight

Firebase

New Relic

Job description

Job Description

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We are seeking a Senior iOS Mobile Developer with strong experience building scalable, consumer-facing native iOS applications. The ideal candidate should have expertise in modern iOS development, API integrations, performance optimization, and App Store deployment. Experience with retail or e-commerce applications is highly preferred.

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Required Skills

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• 8+ years of experience in Native iOS application development.
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• Strong expertise in Swift and Objective-C.
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• Hands-on experience with UIKit, SwiftUI, Core Data, and Core Animation.
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• Strong understanding of iOS application architecture (MVVM, MVC, Clean Architecture).
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• Experience integrating RESTful APIs, JSON, and secure authentication mechanisms (OAuth/JWT).
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• Strong knowledge of Grand Central Dispatch (GCD), async/await, multithreading, memory management, and performance optimization.
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• Experience implementing offline storage, caching, and data synchronization.
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• Hands-on experience with Firebase (Analytics, Crashlytics) or similar mobile analytics platforms.
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• Experience with mobile monitoring and performance tools such as New Relic, Datadog, or similar.
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• Experience writing Unit Tests and UI Automation Tests using XCTest/XCUITest.
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• Experience with App Store Connect, TestFlight, certificates, provisioning profiles, and App Store release management.
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• Familiarity with CI/CD tools such as Fastlane, Bitrise, Jenkins, GitHub Actions, or Azure DevOps.
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• Strong experience with Git and Agile/Scrum development methodologies.
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• Excellent problem-solving, communication, and collaboration skills.
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Preferred Skills

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• Experience developing retail or e-commerce mobile applications.
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• Experience with Shopify, Shopify Plus, or other enterprise e-commerce platforms.
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• Experience integrating Apple Pay or other mobile payment solutions.
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• Experience building features such as loyalty programs, order management, inventory visibility, or personalized shopping experiences.
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• Experience with cloud platforms such as AWS, Azure, or GCP.
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• Experience supporting high-volume, consumer-facing mobile applications.
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\u000ApDonato Technologies Inc. is a trusted IT staffing, consulting, and software development partner headquartered in Dallas, Texas. We support clients across industries by understanding their unique business needs and delivering tailored technology and workforce solutions. Our focus is on connecting the right talent with the right opportunity-ensuring clients receive dependable, skilled professionals and candidates receive meaningful career growth and support. We work closely with small to mid-sized organizations to provide flexible, high-quality services that drive performance, innovation, and long-term success.\u000A